Big Akai Autoreverse 3-head deck with Glass GX heads. Direct monitoring possible. This machine is optically very good, see all pictures closely to judge for your self. Only a few wood fineer corner damages Plays, spins and records perfect. All contacts cleaned All electrolytes in the signal pathare new! Levels adjusted correct. No difference hearable between source and tape! High speed winding. Including the 2 metal reels with 1 Sony tape. Its old, but sounds still very good. Best results with new tape. Carefully shipped Pictures are part of the description Description: Up to now in manufacturing recording/playback heads, permalloy has been used for making the core and metallic foil has been used for making the gap. However, for the model GX-220D Akai has developed a glass and Xtal (crystal) ferrite head. The core is made of pure crystal ferrite in addition to which the inner circumference of the head shield (including the core and the gap) is mounted and set in glass. As a result, the head is not only dust free and wear free, but produces a focused field (the magnetic field is concentrated into a narrow oblong radius) permitting recording without the weakening or erasing of the signal by the bias current. Specifications Track system: 4-track, 2-channel, stereo/monaural system Heads: 1 x GX playback, 1 x GX record, 1 x erase Motor: 2 x reel, 1 x capstan Reel size: up to 7 inch reel Tape speeds: 1 7⁄8 3 3⁄4 7 1⁄2 ips Wow and flutter: 0.08% (7 1⁄2 ips) Frequency response: 30Hz to 24kHz (7 1⁄2 ips) Signal to Noise Ratio: 50dB Total harmonic distortion: 1.5% Input: 50mV (line), 7mV (DIN), 0.2mV (mic) Output: 1.23V (line) Semiconductors: 24 x transistors, 2 x IC, 14 x diodes Dimensions: 430 x 425 x 230mm Weight: 19kg Carefully insured shipped